Astronomical device



June 2s, 1927. 1,634,207

INVENTOR ATroRNI-:Ys

1,634,207 June 281927 D.PHHJPS ASTRONOMICAL DEVICE Filed April 12, 1926 3 sheets-sheet 2 1,634 207 Jumetl 28, 1927. D' Pmi-LIPS ASTRONOMICAL DEVICE Filed April 12, 1926 3 Sheets-#Sheet 3 INVENTOR, b

7%/ DAVID PHiLL/P,

BY v MAA o ATTORNEYS Patented June 28, 1927.

` UNITED STATES PATENTv OFFIKCIE'...v

DAvID PHILLIPS, or DAY'roNA BEACH, FLORIDA.Y

AsTnoNoMIcAE DEVICE.

i Application filed April 12, 1926. Serial No. 101,493.

This invention relates to .an educational device and has for its object an arrangement whereby the approximate position of the moon relative to the earth and the position of the earths shadow and the moon7s shadow maybe determined for any hour during the day or for an period of the orbit of the moon.

A further object of the invention is the provision of a device in which a globe is provided representing the earth and having a shadow projecting therefrom with a globe representing the moon and adapted to be moved in a circle about the globe representing the earth'and in which the shadow yof the moon follows the globe representing the moon in an orbit around the centrally disposed globe.'

This invention rwill be best understood from a consideration of the following detailed description, inv view of the accompanying drawings forming a part of the specification; nevertheless it is to be understood kthat the invention is not confined to the disclosure, being susceptible of such changes and modifications as shall define no material departure from the salient features ofthe invention as expressed in the appended claims.

lnthe drawings:

Figure 1 is a view in elevation of the device constructed in accordance with the principles of my invention.

Figure 2 is a horizontal section of the device.

Figure 3 is a vertical section of the same.

Figure 4 is a fragmentary view partly in section showing the weight for supporting the mechanical shadow ofl the moon.

Figure 5 is a viewy in perspective of the parts of the weight supporting means shown in detached relation. 1

Referring more particularly to the drawings, 104 designates a base member having an upstanding panel 11 secured thereto in which is mounted a sleeve 12 secured by a fiange 13 to the panel 11. The sleeve forms a bearing for a shaft 14 which extends for-v wardly from the panel 11.

A` gear 15 is made rigid with the shaft by means of a set screw 16 while a gear 17 hasv a hub or sleeve portion 18 which is loose on said shaft. i

A Ychain 19 connected with the gear or sprocket 15 is adapted to be driven in any approved `manner and at a predetermined speed fo-r revolving the shaft 14. The gear or sprocket 17 is driven by a chain 2O 'at a v predetermined speed relative to the speed of the sprocket 15. Upon the outer free end of the shaft is rigidly fixed a globe 21 which represents the earth. Extending in one direction' from the earth is a mechanical shadow generally designated by the numeral 22. This shadow is formed of a framework composed of a block 23 and rigid wires 24. These wires are connected at their outer ends at 25 and have their inner ends extending to a ypoint in a circumference which is located in a vertical plane passing through the center of the globe-21 and as shown at 26.

A soft fabric screen 27, painted black, is

secured to the wires or rods 24 in conical formation with the inner or enlarged end embracing the globe 21 so that always a semi-spherical portion of the globe is revolved within the inner end of the shadow.

The block 23 to which the Wires 24 of the screen is secured in any approved manner is supported by a standard 28 secured to the base member 10.

A rod 30 is secured at one end to the sleeve 18, the opposite end being bent at a right angle, as shown at 31 on which a solid globe 32 is fastened and which represents the moon. shadow 22 is provided for the moon and consists of a plurality of bars or sti wires 34 secured together at their outer ends as shown at 35 ywith the inner ends extending over the globe 32. A fine fabric screen 36, painted black, is fastened over the rods 34 and is of conical shape with the inner end embracing the globe 32 for at least half of the surface.

The shadow 33 is supported by an arrangement shown more particularly in Figures 4 andY 5 and consists of a ring 37 to which the rods l34 .and the screen 36 is connected. This ring is secured to a cuff 38 ywhich is rigidly formed Witha sleeve 39 on the shaft 31. A U-shaped member 40embraces the sleeve 39 and depends therefrom. A weight 41 is located between the .arms of the U-shaped member and secured thereto so that when the weight oscillates the U-shaped member the sleeve 39 will be revolved on the shaft moving the ring 37 and the shadow' 'simultaneously therewith. The weight is provided to maintain the shadow in a predetermined position relative to the globe 32.

A circular disk 42 is secured by means of '85 A shadow 33 similar to ther tionv on the earth.

bars 43 to the standard 1l and it has a bar of concentric upraised annular portions 44 and 45. The annular raised portion 45 forms the hour dial and dividedofl' int-o sect-ions numbered from l to l2, the middle portion of l2 of the sections representing the night, while the middle portion of the remaining l2 sections represents midday. rlhe raised portion est represents the dial and 1s divided off into days and also depicts the orbit of the moon aroundzthe earth. Numbers which represent the hours during the day are adapted to be shown in black on a White background, while the numbers which represent the night and are located in the shadow are white en a black bachground.

The sphere representing the moon as positioned in Figure l indicate,E the moon travelling over its orbit and already four days old form the first quarter. This rim is formed of highly polished brass with the field between the two dials being` color-ed blue. An arrow @lf3 is secured by means of a screw f7 to the top of the globe 2l and is adapted to represent the observers posirlhis arrow points directly to the numeral onthe dial and will indicate the position of rotation of the earth at any hour during the day or night.

The 'annular member 4t2 has an opening 49 through which the shaft la and sleeve 18 are extended.

It will be noted that the mechanical shadow 22 is provided with a cut out porion a8 through which the globe BQand the mechanical shadow 38 are adapted to be moved when the moon passes through the ,earths shadow, lt is taken for granted that the position of the sun is to the right of the drawing in Figures l and 2 since the shadows extend to the left and in the opposite direction. y

The results indicated above are only approximately accurate since certain variations in the positions of the moon are not accounted for in the operation of the device.

`What I claim is:

l. A device of the class described comprising a globe representing the earth, a conically shaped member embracing a portion of the globe and extending outwardly therefrom, said member being adapted to represent the shadow of the earth, means for maintaining said shadow in a predetermined position, a globe adapted to be revolved about the first mentioned globe and representing the moon, and means for causing the second mentioned globe to be revolved around the first mentioned Globe and pass through the shadow associated with the first mentioned globe.

2. A device of the class described comprising a supporting panel, a shaft revolubly mounted in said panel, a globe rigid with the free end of the shaft, a sleeve on the shaft and mounted for rotation independently of said shaft, a bar connected with the sleeve, a second globe rigid with the bar, the second mentioned globe being adapted to be revolved around the first m-entioned globe, and means for causing rotation of the shaft for rotating the globe, a screen conically shaped associated with -the first mentioned globe and adapted to represent the shadow from said globe, said conical shaped screen being provided with a groove through which the second mentioned globe is adapted to travel.

3. A device of the class described comprising a supporting panel, a shaft revolubly mounted in said panel, a globe rigid with the free end of the shaft, a sleeve on the shaft and mounted for rotation independently of said shaft, a bar connected with'the sleeve, a second globe rigid with the bar, the second mentioned globe being adapted to be revolved around the first mentioned globe, and means for causing rotation of the shaft for rotating the globe, a screen conically shaped associated with the first mentioned globe and adapted to represent the shadow from said globe, a conically shaped screen associated with the second mentioned globe, the second mentioned globe representing the moon, and the conically shaped screen representing the shadow from the moon, the first mentioned conically shaped screen being provided with a groove through which the second mentioned globe and its associated conically shaped screen is adapted to pass.

4f.. A device of the class described comprising a supporting panel, a shaft revolubly mounted in said panel, a globe rigid with the free end of the shaft, a sleeve on the shaft and mounted for rotation independently of said shaft, a bar connected with the sleeve, a second globe rigid with the bar, the second mentioned globe being adapted to be revolved around the first mentioned globe, and means for causing rotation of the shaft for rot-ating the globe, a screen conically shaped associated with the first mentioned globe and adapted to represent the shadow from the said globe, a conically shaped screen associated with the second mentionedglobe, the second mentioned globe representing the moon and the conically shaped screen representing the shadow from the moon, and means for maintaining the conically shaped screen in a horizontal position, the first mentioned conicallyV shaped screen being provided with a groove through which the second mentioned globe and its associated conically shaped screen is adapted to pass.

5. A device of the class described comprising a supporting panel, a shaft revolubly mounted in said panel, a globe rigid with the free end of the shaft, a sleeve on the ist shaft and mounted for rotation independently of said shaft, a bar connected with the sleeve, a second globe rigid with the bar, the second mentioned globe being adapted to be revolved around the first mentioned globe, and means for causing rotation of the shaft for rotating the globe, a screen conically `shaped associated with the first mentioned globe and adapted to represent theshadow from said globe, a conically shaped screen associated with the second mentioned globe, the second mentioned globe representing the moon and the conically shaped screen representing the shadow from the moon, means for retaining the conically shaped screen in a horizontal position and for maintaining the conically shaped member pointing in a predetermined direction relative to the first mentioned conically shaped screen, the first mentioned conically shaped screen being provided with a groove through which the second mentioned globe and its associated conically shaped screen is adapted to pass.

6. A device of the class described comprising a supporting panel, a shaft revolubly mounted in said panel, a globe rigid with the free end of the shaft, a sleeve on the shaft and mounted for rotation independently of sai-d shaft, a bar connected with the sleeve, a second globe rigid with the bar, the second mentioned globe being adapted to be revolved around the first mentioned globe, and means for causing rotation of the shaft for rotating the globe, a conically shaped screen associated with the first mentioned globe and adapted to represent the shadow from said globe, conically shaped screen associated with the second mentioned globe, the second mentioned globe representing the moon and the conically shaped screen representing the shadow from the moon, a weight depending from the bar which vcarries the second mentioned globe, said secon-d mentioned screen being connected with the Weight whereby said conically shaped screen is maintained in a predetermined position relative to the conically shaped screen associated with the first mentioned globe, the first mentioned conically shaped screen being -provided with a to be revolved around the first mentioned globe, and means for causing rotation of the shaft for rotating the globe, a screen conically shaped associated with the rst mentioned globe and adapted to represent the shadow from said globe, a conically shaped screen associated with the second mentioned globe, the second mentioned globe representing the moon and the conically shaped screen representing the shadow from the moon, an hour dial associated with the first mentioned globe, an arrow connected with said globe and adapted to be revolved simultaneously therewith for indicating the hours of day or nightas represented by the hour dial, a second dial concentric with the first mentioned dial and adapted to be divided into a plurality of parts for indicating the days of the moons orbit, the globe representing the moon being adapted to be revolved over the dial representing the moons orbit.

DAVID PHILLIPS. 

